This is a very interesting effect I have come across while playing around with nottud's transform trigger: Enhanced heka gigantes shockwaves. Just use the transform trigger to turn the regular heka shockwave SFX into the shockwave SFX. While this dosen't change anything, it sure looks interesting and makes for a very nice effect, especially when used against large groups of enemies. Final note: this also looks really cool if you use it with fire siphons the same way.